Bull shark vs Megalodon: Size, Weight & Key Differences

QUICK VERDICT

Megalodon is about 3.8× longer by these reference values.

Megalodon uses a 15.3 m upper reference, compared with 4 m for Bull shark. Megalodon's weight reference is about 152× heavier.

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS

ABull sharkreported to 4 m / 13 ft

BMegalodonevidence-based upper estimate 14.1–15.3 m / 46–50 ft

REFAdult human1.8 m · about 80 kg

Length bars use upper comparison values and do not show body depth, tail proportion or typical adult size. A long thresher tail, for example, does not equal whale-shark body mass.

THE NUMBERS

Side by side.

MeasureBull sharkMegalodon

Length referencereported to 4 m / 13 ftevidence-based upper estimate 14.1–15.3 m / 46–50 ft

Weight referencereported to 316.5 kg / 698 lbmodeled reference around 48,000 kg / 53 tons

Bite force170–5,914 N across studied sizes and bite pointsModeledmodeled range about 108,514–182,201 NModeled

TimeCoasts, estuaries and freshwaterabout 20–3.6 million years ago

DietFish, rays, turtles and other sharksLarge marine mammals, turtles and fishes

WHAT SETS THEM APART

More than a size contest.

Length and weight

Bull shark is represented by reported to 4 m / 13 ft; Megalodon by evidence-based upper estimate 14.1–15.3 m / 46–50 ft. The 4 m figure is a reported maximum; typical mature animals are smaller. No complete skeleton exists; 15.3 m is an evidence-based maximum from museum specimens, not a tape measurement.

Habitat and diet

Bull shark: Coasts, estuaries and freshwater; fish, rays, turtles and other sharks. Megalodon: Warm and temperate seas worldwide; large marine mammals, turtles and fishes.

Bite evidence

Bull shark: The upper value is a theoretical posterior bite for the largest specimen in a 73–285 cm study series—not a universal adult bite. Megalodon: Finite-element scaling produced a range, not a directly measured bite.

Fossils change the certainty

At least one animal is known from fossils. Fossil length, weight and bite estimates depend on which living analogues and scaling equations researchers choose.

TRACE THE CLAIMS

Sources and limits.

Bull sharkHabegger et al. (2012) + Florida Museum ↗MegalodonWroe et al. (2008) + Shimada et al. (2020) ↗How we standardize comparisonsRead the methodology →